On the 14th, a server belonging to Square Enix was hacked, and information was stolen. There was paranoia over lost credit card details, passwords, and other information that should be kept away from the eyes of others, but Square has reassured the fans that this did not happen.
In an email to the subscribers of their service, Square disclosed that the hacking happened on December 14th, and the service was immediately suspended in North America and Japan. They stated clearly that no credic card info, login credentials, or personal information was not leaked because that data was simply not on the server that was compromised.
Square Enix said that their investigation into the intrusion would continue, and that the incident has been reported to the Japanese government. Service is expected to return to full swing in a few days, but no specific ETA was given. Kudos to Square for keeping some data away from easily-accessible service, and I once again flip the bird to the idiots at the credit card companies who are honestly the ones at fault for having a single number giving access to great wealth that also has to be given out to multiple people.